私が走ると言う
systemctl | grep running | column -t
次の結果が表示されます。
init.scope loaded active running System and Service Manager
session-23.scope loaded active running Session 23 of user admin
auditd.service loaded active running Security Auditing Service
chronyd.service loaded active running NTP client/server
crond.service loaded active running Command Scheduler
dbus.service loaded active running D-Bus System Message Bus
[email protected] loaded active running Getty on tty1
gssproxy.service loaded active running GSSAPI Proxy Daemon
irqbalance.service loaded active running irqbalance daemon
named.service loaded active running Berkeley Internet Name Domain (DNS)
NetworkManager.service loaded active running Network Manager
nfs-idmapd.service loaded active running NFSv4 ID-name mapping service
nfs-mountd.service loaded active running NFS Mount Daemon
nfsdcld.service loaded active running NFSv4 Client Tracking Daemon
oddjobd.service loaded active running privileged operations for unprivileged applications
polkit.service loaded active running Authorization Manager
postfix.service loaded active running Postfix Mail Transport Agent
rpc-gssd.service loaded active running RPC security service for NFS client and server
rpc-statd.service loaded active running NFS status monitor for NFSv2/3 locking.
rpcbind.service loaded active running RPC Bind
rsyslog.service loaded active running System Logging Service
[email protected] loaded active running Serial Getty on ttyS1
smartd.service loaded active running Self Monitoring and Reporting Technology (SMART) Daemon
同様の出力を維持しながら「説明」列をフォーマットして、スペースに基づいてより多くの列に分割しないようにするにはどうすればよいですか。たとえば、元の出力と同様に、読みやすい方法で5番目の列をフォーマットするにはどうすればよいですかsystemctl？
私はこの質問を見て非常に近づきました。https://stackoverflow.com/questions/6462894/how-can-i-format-the-output-of-a-bash-command-in-neat-columns
ベストアンサー1
これはおそらくPOSIX awkを使用して欲しいものです（このデモではcat file代わりに使用されます）。systemctl
$ cat file |
awk -v OFS='\t' '$4=="running"{hd=$1 OFS $2 OFS $3 OFS $4; sub(/^([^ ]+ +){4}/,""); print hd, $0}' file |
column -s$'\t' -t
init.scope loaded active running System and Service Manager
session-23.scope loaded active running Session 23 of user admin
auditd.service loaded active running Security Auditing Service
chronyd.service loaded active running NTP client/server
crond.service loaded active running Command Scheduler
dbus.service loaded active running D-Bus System Message Bus
[email protected] loaded active running Getty on tty1
gssproxy.service loaded active running GSSAPI Proxy Daemon
irqbalance.service loaded active running irqbalance daemon
named.service loaded active running Berkeley Internet Name Domain (DNS)
NetworkManager.service loaded active running Network Manager
nfs-idmapd.service loaded active running NFSv4 ID-name mapping service
nfs-mountd.service loaded active running NFS Mount Daemon
nfsdcld.service loaded active running NFSv4 Client Tracking Daemon
oddjobd.service loaded active running privileged operations for unprivileged applications
polkit.service loaded active running Authorization Manager
postfix.service loaded active running Postfix Mail Transport Agent
rpc-gssd.service loaded active running RPC security service for NFS client and server
rpc-statd.service loaded active running NFS status monitor for NFSv2/3 locking.
rpcbind.service loaded active running RPC Bind
rsyslog.service loaded active running System Logging Service
[email protected] loaded active running Serial Getty on ttyS1
smartd.service loaded active running Self Monitoring and Reporting Technology (SMART) Daemon
私が推測する出力はsystemctl質問に与えなかったので、スペースで区切られた文字列にすぎません。説明の一部にタブ文字を含めることができる場合は、タブ文字のgsub(OFS," ")前に出力フィールドと入力フィールドの区切り文字printとして使用できないタブ文字以外の文字を見つけます。awkcolumn